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AlCl3 forms a dimer but BCl3 does not fo...

`AlCl_3` forms a dimer but `BCl_3` does not form dimer.Explain.

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Knowledge Check

  • AlCl_3 exist as dimer because of

    A
    High charge in nucleus
    B
    Al has greater ionisation potential
    C
    Al has large radius
    D
    Incomplete p - subshell

  • BCl_3 does not exist as dimer but BH_3 exist as dimer (B_2H_6) because :

    A
    Chlorine is more electronegative than hydrogen
    B
    there is `ppi-dpi` back bonding in `BCl_3` but `BH_3` does not contain such multiple bonding
    C
    large sized chlorine atoms do not fit in between the small boron atoms whereas small sized hydrogen atoms get fitted between boron atoms
    D
    none of these